Imports routes into an Open Shortest Path First (OSPF)
not-so-stubby area (NSSA) area.

backbone

Imports routes into an OSPF backbone area.

Command
Description:

To indicate where to import routes, use the
set level command in route-map configuration mode. To delete
an entry, use the no form of this command.

This command is disabled by default.

For Intermediate System-to-Intermediate System
(IS-IS) destinations, the default value is level-2. For OSPF
destinations, the default value is backbone.

Use the route-map (IP) global
configuration command with the match and set
route-map configuration commands to define the conditions for
redistributing routes from one routing protocol into another, or
for policy routing. Each route-map command has an associated
list of match and set commands. The match
commands specify the match criteria--the conditions under
which redistribution or policy routing is allowed for the current
route-map command. The set commands specify the
set actions--the particular redistribution or policy routing
actions to perform if the criteria enforced by the match
commands are met. The no route-map command deletes the route
map.

The set route-map configuration
commands specify the redistribution set actions to be performed
when all of the match criteria of a route map are met.

Example:

In the following example, routes will be
imported into the Level 1 area: